Severity determination is one of the most difficult tasks a vibration analyst faces. Several methods can be used to help identify the severity of defects identified in vibration data. One method is to consider the amplitude of the defect. This usually works well, but does not always correctly identify the severity of the problem. Another […]

Right angle drives, or 90 degree gearboxes are very common in industry. These are speed reducer/increaser machines with an output shaft exiting at a 90 degree angle with respect to the input shaft. In some cases the 90 degree turn stays on the horizontal plane. This is great because the alignment can be treated as a […]

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The Reliability Support Team at the Eastern Processing Facility located at Cape Canaveral Air Force Station, FL, won Uptime Magazine’s Best Design for Reliability Program award. During the design phase of their program, the team was challenged with the implementation of Reliability-Centered Maintenance (RCM) principles and Precision and Predictive techniques from construction through commissioning. These have […]

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When you or your supervisor are planning attendance at a training course there is an important consideration to keep in mind. Have you met the prerequisites for the course you have selected? These prerequisites are dictated by the company presenting the course and take into account basic knowledge about the subject as well as exposure to […]

Average – In vibration analysis, an average usually refers to the process whereby the vibration software will, after converting waveforms into spectrums via FFT, add the resultant spectrums together and then divide by the number of spectrums added together. The result is an “averaged spectrum”. Band – A band is simply a range of frequencies […]

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